Picker-check for looms.



2 SHEETS-SHEET 1.

Patented June 28, 1910.

daiz'aka'.

s. TOYODA. PIGKEB CHECK FOR LOOKS.

APPLICATION FILED P318, 1909.

WITNESSES:

INVENTOR. By jby'acza 0. A TORNEY.

S. TOYODA.

PIGKEB. CHECK FOB LOOMS.

APPLICATION rILnn FEB. a, 1909.

962,802. Patented June 28, 1910.

2 SHEETS-SHEET 2.

we m

ZZZ 223 WI TNESSES:

INVENTOR.

SAKICHI TOYODA,

0F SHIMASAKI-CHO, NAGOYA, JAPAN.

PICKER-CHECK FOR LOOMS.

Specification of Letters Patent. Patented J 11119 28, 1910 Originalapplication filed April 20, 1908, Serial No. 428,218. Divided and thisapplication filed February 8, 1909. Serial No. 476,680.

To all whom it may concern:

Be it known that I, SAKIoHI TOYODA, a

subject of the Emperor of apan, residing "at Shimasaki-Cho, Nagoya, 1nthe Empire of Japan, have invented certain new and useful Improvementsin Picker-Checks for Looms, of which the following is a specification.

This invention relates to improvements in picker checks and is adivision from my application filed April 20th, 1908, Serial Number428,218.

One object of the inventlon 1s to provlde an improved picker checkmechanism for loomswhereby the movement of the picker will be retardedpriortO the limit of its movement so as to materially relieve the strapof strain when the picker is suddenly brought to a position of restthereby.

The invention will be more fully described in connection with theaccompanying drawings and will be more particularly pointed out andascertained in and by the appended claims.

In the drawings :Fi re 1 1s a plan vlew, with parts in section, 0 animproved mechanism embodying the main features of my invention. Fig. 2is a sectional view on line 2-2 of Fig. 1. Fig. 3 is a sectional View online 33 of Fig. 1. Fig. 4 is a rear view of a portion of the apparatusshown in Fig. 1. Fig. 5 is a plan view of one end of a loom showing theapplication of my 1mproved form of picker check thereto. Fig. 6 is aview similar to Fig. 5 with parts removed and parts in section. Fig. 7is a sectional view on line 77 of Fig. 5.

Like numerals of reference designate similar parts throughout thedifferent figures of the drawmgs.

It will be seen by reference to Fig. 5 that the outer end of the shuttleengages a recessed portion 97 in the inner face of the picker block 43and therefore in this form of the invention it is necessary to move thepicker block 43 to the left when it is desired to discharge theoperating shuttle or elevate it out of the shuttle and such displacementof the picker block 43 is effected automaticallyaccording to myinvention by means which as shown consists of the followingconstruction.

The strap for the picker bar 44 cushioning its movements in oppositedirections is indicated generally at 104 and will be hereinafterdescribed in detail. A frame 105 carries said strap and is provided withextensions 106 and 107 slidably mounted in guides 108 and 109 projectingrearwardly from the lay member 29. Said ides 108 and 109 also support aguide ro ll0 on which the picker block extension 42 slides. Extension106 isprovided with a pin 111 adapted to project into and be operated bya cam slot 112 formed in a bar 113 which latter may be actuated in anydesirable manner, not shown. Bar 113 at its upper end is guided bytheframe 105 and the guide 108 and if desired an arm 108 may be providedto insure retention of the bar 113 in its working position when theframe 105 is moved to the left. When the bar 113 is raised it will causethe frame 105 to move to the left and when the bar 113 descends it willrestore the frame 105 to the normal position shown in Fig. 7. Owing to aspring (not shown) which normally exerts a pull to the lefton the pickerbar 44, shown in Fig. 5, said picker bar will normally occupy an extremeposition to the left of the strap and when the frame 105 is moved towardthe left the said spring will impart a movement of like extent to thepicker bar 44 and the latter being connected with the picker block 43will move the same tothe left out of engagement with the shuttle to freethe end thereof from the recess 97 and will permit the shuttle to beraised.

An improved and novel form of the strap is provided for the picker bar44 to arrestmovement thereof and the improved arrangement is designed tooffer resistance to the picker bar prior to its limit of movement orprior to complete stoppage of the same. 7

Referring to Figs. 1 to 4 there are shown in the frame 105 two pickerbar straps 155 and .156, one disposed within or inside of the other.Said stra s 155 and 156 are preferably in the form 0 loops and the sameare 100 shown as being anchored by a pin 154, or equivalent means to oneside of the frame 105. Preferably the straps 155 and 156 are adjustablyanchored and therefore the straps are provided with slots through whichthe 105 in 154 passes and said slots are preferably formed. in the endsof said straps as indicated at 150. This adjustment not only permits oflimiting the swing of the picker bar 44 but it also permits ofadjustment of the 110 ;tra'p 156 so that the resistance offered therebyto the picker bar may be increased or decreased as desired. By means ofthis adjustment the throw of the picker bar may also be varied byadjusting the strap 155. The straps 155 and 156 are seated, at a pointsubstantially opposite from the pin 15st, in a support 157 which ismounted on the frame 105. Said support 157 is provided with a U-shapedarm 158 which is so proportioned with respect to the thickness of thestrap loops 155 and 156 as to retain the same in relatively closeproximity or in abutting relation and also permit of relative movementof said straps. Said support 157 is provided with an extension 159 whichis secured by screws 160 to the frame 105. Said support thereforeconstitutes means for loosely supporting said straps in operativerelation with res ct to the picker bar 4A and for permitting relativemovement of said straps with respect to each other. Means are provided,which means is preferably adjustable, for anchoring one of said strapsand coiiperating with said support to retard movement of the otherstrap. As shown said means consists of a slide 161 which is grooved tofit upon a guidin extension 162 of the support 157. Sai extension 162and said guide 161 are slotted to receive a bolt 163 whereb said slidemay be anchored in its' adjusts position. The inner end of said slide161 is bent downwardly and is provided with a bolt 16 1 which assesthrough the stra 155 and secures t e same rigidly to said slide. Thehead of said bolt 164 displaces the inner strap 156 inwardly and servesby separating said straps to increase the friction of strap 156 in itsmovement in the sup ort 158. By adjusting the slide 161 inward y theretardatlon of the strap 156 will be increased. It will be seen from theforegoing that the swinging icker bar will first engage the strap 156and will move the same in the support 158 until the strap 156 is inengagement with the strap 155 at which point the picker bar 44 will bepositively brought to a position of rest. The manner in which the stra156 is supported will, as herein before escribed, permit said strap tomove only under a frictional resistance dependent upon adjustment of theparts and such frictional resistance will serve in a eat measure toneutralize the force of the low imparted by the picker bar on the strap156 an will result in relieving the strap 155, in great measure, of thestrain usually imposed thereon. This will result in greatl prolongingthe life of the strap 155 and wi I prevent frequent breakage which hasheretofore been a great defect in-ap aratus of this character. It willbe seen t at I have provided positively and straps for the picker bar.

yieldin g'ly acting strap, and a mounting for said auxiliary strapengaging the same to aiford resistance against movement thereof. I

3. A picker check comprising in combination, a picker bar for operatinga shuttle, a primary strap limiting movement of said picker bar, a rigidmounting for said primary stra an auxiliary strap for neutralizing the bow of said bar on said primary strap, and a mounting for said auxiliarystrap frictionally engaging the same to retard movement thereof.

4. A picker check for looms comprising in combination, a picker bar foroperating a shuttle, a primary strap in the form of a loop for limitingmovement of said icker bar, a rigid mounting for said prlmary strap, an.auxiliary strap in the form of a loop dis osed within said primary strapand relative y restricted in size with respect thereto, and a mountingfor said auxiliary strap engaging the same to afford resistance againstmovement thereof for neutralizing the blow of said bar on said primarystrap.

5. A picker check for looms comprising in combination, a picker bar foroperating a shuttle, a primary strap in the form of a loop limitingmovement of said bar, oppositely disposed means for rigidly mountlngsaid primary strap, an auxiliary strap in the form of a loop disposedwithin said primary strap and relatively restricted in size with res ectthereto, said auxiliary strap being rigi l secured to one of saidoppositely disposed istening means, and a support for said auxiliarystrap cotiperatin with the other of said oppositely dispose means tofrictionally grip said auxiliary strap and permit movement thereof forneutralizing the blow of said bar on said primary strap.

6. A picker check for looms comprising in combination, a picker bar foroperating a shuttle, a primary strap in the form of a 100 limitingmovement of said bar, means rigidly anchoring the ends of said primarystrap, an auxiliary stra in the form of a loopdis osed within saiprimary strap and relative y restricted in size with respect thereto,the ends of said auxiliary strap being anchored by said means, a supportnormally loosely holdin said primary and auxiliai'r'y straps, and ajustable means rigidly secured to said primary strap and adapted tocooperate with said support to impose frictional resistance to movementof said auxiliary strap thereby serving to neutralize the blow of saidbar on said primary strap.

7. A picker check for looms comprising in combination, a picker bar foroperating a shuttle, straps for limitin movement of said bar, andmountings rigi 1y holding one of said straps and releasably holdinganother and permitting displacement of said releasably held straps inmore than one direction.

8. A picker check for looms comprising in combination, a picker bar foroperating a shuttle, a pair of straps for limiting movement of said bar,one of said straps bein reduced in size with respect to the other, anmountings rigidly holding the larger of said straps and releasablyholding the smaller straps.

In testimony whereof Iafiix my signature in presence of two witnesses.

' N SAKICHI TOYODA. Witnesses:

EDWIN L. NEVILLE, GEORGE Pos'r WHEELER.

